Video review sản phẩm: Astell & Kern AK320 – máy nghe nhạc cao cấp

Mua ngay: Astell & Kern AK320 – máy nghe nhạc cao cấp
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Inheriting Sound

• The primary goal of Astell & Kern has always been to deliver the original sound, and we believed that the AK380 did just that.
• We wanted even more people to experience the AK320 and its ability to deliver the original sound as intended.
• AK4490’s Dual-DAC, DSD-to-PCM Playback, Parametric EQ with 20bands 0.1dB, 200 Femto Second VCXO Reference Clock, Exceptional Expandability, DLNA-based AK Connect App and Metal Touch Sensor Home Button

AK320 vs. AK380

	AK320	AK380
PCM	24bit 192kHz Bit to Bit	32bit 384kHz Bit to Bit
DSD	DSD to PCM	Native DSD Playback
	DSD64/128 to PCM 24bit 176kHz	DSD 2.8MHz (DSD 64) / DSD 5.6MHz (DSD 128) / DSD 11.2MHz (DSD 256)
DAC	AK4490 x2 (Dual DAC)	AK4490 x2 (Dual DAC)
PEQ	Support	Support
Femto Clock	Support	Support
USB DAC	Max 24bit 96kHz (UAC 1.0)	Max 32bit 384kHz / DSD 11.2MHz (UAC 2.0)
Built-in Memory	128GB	256GB

24bit 192kHz bit to bit Playback

• AK320 is capable of bit-to-bit playback up to 24bit, 192kHz.
• 32bit audio is downsampled using a sample-rate converter (SRC). In addition, DSD 64/128 can be played back via conversion to PCM.

* 32bit, 384kHz is downsampled to 24bit, 192kHz, and 32bit, 352kHz is downsampled to 24bit, 176kHz for playback.
* DSD 64/128 is converted via DSD-to-PCM to PCM 24bit, 176kHz for playback.
32bit Playback by the AK320 

PEQ (Parametric EQ)

• A parametric equalizer (PEQ*1) was implemented in the AK380 to deliver detailed adjustment of the original sound, and an audio digital signal processor (DSP) was added to aid in this process.
• This frees up CPU cycles previously needed for calculating graphic equalizers (GEQ), allowing more detailed and accurate calculations via the dedicated DSP.
• The audio DSP expands the existing 10-band, ±0.5 dB graphic equalizer (GEQ*2) to 20-band, ±0.1 dB to more precisely adjust the frequency and gain (dB) as well as more accurately specifying the frequency range via Q value adjustments.

* The PEQ supports up to 8 kHz – 192 kHz (8/16/24-bit) formats, but DSD and 32-bit audio are not supported.

 

What is Parametric Equalization (PEQ*1)?

Parametric equalization refers to the ability to increase or decrease the volume within the Q value range. A Q value is a frequency range relative to a selected frequency. The frequency range decreases when the Q value increases and vice versa.

What is Graphic Equalization (GEQ*2)?

Graphic equalization divides the audible frequency register into several registers and increases or decreases the level of each register with a volume slider to adjust the respective frequency’s characteristics. The switches of the volume slider are connected like a graph to visually determine the frequency characteristics, hence the name “graphic equalizer.” 

Equipped With a Femto Clock to Deliver True Original Sound

• The AK320 supports USB DAC functionality.
• The AK320 can be connected to a PC or Mac via USB for use as a USB DAC that supports PCM/DSD.
• When playing back music stored on a PC or Mac, the Dual-DAC is able to deliver richer audio of outstanding soundstage and resolution well beyond the limits of a built-in sound card.

* When using the AK320 as a USB DAC, its PEQ settings are not applied, and output up to 24bit, 96kHz is supported.
* DSD 64/128 is converted via DSD-to-PCM for playback. 

AK Connect App

• Astell & Kern has further enhanced DLNA functionality via the AK Connect app.
• Wireless networking DLNA (version 1.0) connects to a NAS or PC, and is easily controlled with a smartphone or tablet through AK Connect.
• Source files on a PC or NAS can be freely transferred and streamed without the hassle of turning on the computer and physically connecting with a cable.
• If on the same access point (AP) network, music files on a PC or NAS can be played back via DLNA.

 

(Digital Media Player)

DMP Finds a list of content on a media server for selection and playback.

DMC (Digital Media Controller)

Finds a list of content on a media server and establishes a connection to a playback-capable device (renderer). By default, a DMC establishes a connection between a media server and media renderer and controls content playback-related operations.

DMS (Digital Media Server = Network Server)

Actually stores the media content to be shared. When connected to a network, the DMS transmits/distributes the media content for other devices to stream or download.

DMR (Digital Media Renderer = Network Player)

Connects to a media server via media controller for content playback. 

 

Pressure-sensitive Metal Capacitive Touch

• The AK320 features the same metal touch interface as the AK380.
• The Metal Touch functions as a home key and interfaces
• with the device via pressure-sensitive touches.

More Expandable Options

• The AK320 can be expanded to a variety of devices through the micro-USB and balanced audio out ports located at the bottom of the product.
• It can be connected with the AMP as well as professional high-impedance headphones for high output and USB for data transfer and charging.
• It can also be connected to the Cradle for balanced audio functionality as well as the CD-RIPPER to conveniently rip audio CDs.

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